Extraction of selenium from copper anode slimes in a ...
A new method was proposed for extracting selenium from copper anode slimes with a low concentration of nitric acid in a sealed sulfuric acid leaching system. It .
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A new method was proposed for extracting selenium from copper anode slimes with a low concentration of nitric acid in a sealed sulfuric acid leaching system. It .
mainly from anode slimes produce d from copper electrorefining, which accounts for at least 75 percent of the tellurium rec overed (Goldfarb, 2017). The reduct ion in known copper sulfide
7 processes to produce precious metals Eurometaux. Jul 3, 2014 ... Anode slimes from electrolytic copper refining are a significant source of precious ... environmental legislation, but also from the acute rise in silver prices. ... but process the lead alloy directly to recover precious metals. .... copper electrorefining and for other materials using processes described above.
There are numerous viable approaches to the treatment of anode slimes from electrolytic copper refining. Of particular interest in the treatment of slimes are the behavior and recovery of selenium. The understanding of the process chemistry involved in the treatment of anode slimes should be aided considerably by recent work on the formation and characterization of slimes.
A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100 and 200°C until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry, and contacting the slurry ...
The refinery production of copper in 2015 was estimated to be million tonnes [].In 2014, the refinery production was Mt, of which approximately Mt was primary electrorefined and firerefined and Mt electrowon, and secondary production was Mt [].Based on Geological Survey (USGS) dataseries [] during 1990–2011, the increase of primary copper production was Mt ...
copper electrorefining process anode slime Construction Waste Crusher Construction waste refers to the construction, construction units or individuals to construct, lay or demolish all kinds of buildings, structures and pipe networks, etc., and generate the spoil, spoil, waste, residual mud and other wastes generated during the repairing process.
Sep 12, 2008· Abstract: A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about and C. until copper, nickel and substantially all of the ...
Copper electrorefining (CuER) is the principal method for producing >70% of high or % pure copper cathodes from 9799% pure blister/fire refinedscrap copper anodes. While the inert and most of less soluble impurities settle as anode slime/sludge, other soluble impurities, particularly the metalloids (group VA/15 elements or Q: As, Sb and Bi) and some transition metals (Mt) codissolved ...
Aug 17, 1999· The present invention is directed to the substantially selective extraction of tellurium from telluriumcontaining materials, and more particularly copper electrorefining slimes. Conventionally, a slurry of the shines is prepared in diluted sulphuric acid, and leached in an autoclave to extract certain metal values, including silver and tellurium.
Aug 17, 1999· The present invention is directed to the substantially selective extraction of tellurium from telluriumcontaining materials, and more particularly copper electrorefining slimes. Conventionally, a slurry of the shines is prepared in diluted sulphuric acid, and leached in an autoclave to extract certain metal values, including ...
Copper anode slimes usually consists of copper, selenium, nickel, tellurium, silver, gold, and trace amount of platinum group metals, with the Te content typically being about 1–4 wt%, and in some cases reaching as high as 8–9 wt% (Moats et al., 2007). For the copper anode slime processing, two main processes are operating in practice to ...
A method for separating tellurium includes separating and recovering tellurium (Te) from a dissolved solution containing the tellurium using a solvent extraction by an extractant, which contains one selected from a group consisting of tributyl phosphate (TBP), tris(2ethylhexyl) phosphate (TEHP) and a combination thereof. The method may separate and recover the tellurium as a highpriced ...
cost of copper electrorefining anode slime processing. Processing of copper anodeslimes for extraction of metal values. Mar 5, 2002 Processing of anodic slimes from an Egyptian copper electrorefining plant, Key words anode slimes, leaching, copper, silver capital costs are relatively low when compared to . Get Price
Recovery Tellurium Us tvpdcollege tellurium extraction from copper electrorefining slimes Recovery of tellurium Free Patents Online tellurium containing tellurium centrifugalpump co in Patent US Recovery of tellurium Google Patents 2 981 595 RECOVERY or TELLURIUM Sidney B Tuwiner Baldwin NY assignor to Phelps Dodge
This poster discusses the extraction and recovery of tellurium. The focus is on effective recovery from copper anode refining slimes into a functional, value added domestic supply chain.
The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slim The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave The excess of selenium and/or sulphur allows the ...
The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave. The excess of selenium and/or sulphur allows the formation of Ag 2 Se or Ag 2 S, which remains ...
Anode slimes contain precious metals like silver, gold and platinum group metals (PGMs), base metals including copper, selenium, tellurium and nickel as well as other impurity elements.
Tellurium can be recovered from leach solutions of copper refinery slimes by precipitation as copper telluride: Te(OH)6 + 5Cu + 3H2SO4 = Cu2Te + CuSO4 + 6H2O The kinetics of this reaction were ...
Extraction of copper and gold from anode slime of Sarcheshmeh Copper Complex selenium, silver, and tellurium with dilute HNO 3 (2–8 M), recovery and recycling of HNO 3, selective solvent extraction
A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100° and 200° C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry, and contacting the ...
An improved process for recovering tellurium from copper electrolysis slime. The process comprises leaching copper and tellurium from said slime with sulfuric acid and recovering tellurium from the solution after leaching (called "leach") by suspending at least one copper electrode plate in a bath of a leach, allowing tellurium to deposit on the surface thereof as copper telluride, agitating ...
Anode slime is a byproduct of copper electrorefining process. It contains copper, lead, gold, silver, selenium, tellurium, arsenic, nickel, platinum, silica and other elements. In processing anode slime, extraction of precious metals becomes the main object, especially gold, silver, selenium, tellurium, and platinum. At the ...
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